Features: it is a kind of high-strength duralumin, which can be strengthened by heat treatment. It has medium plasticity in annealing, rigid quenching and hot state, good spot welding performance. When gas welding and argon arc welding are used, the 2A12 seamless aluminum tube tends to form intergranular cracks; after quenching and cold work hardening, the machinability of the aluminum tube is good, but it is not good in annealing state. Because of the low corrosion resistance, anodizing and painting methods are often used or aluminum coating is added on the surface to improve the corrosion resistance. It can also be used as mold material.
Advantages of 2A12 seamless aluminum tube:
One is the advantages of welding technology: the welding technology of thin-walled copper aluminum tube suitable for industrial production, known as the problem, is the key technology of replacing copper with aluminum for connecting tube of air conditioner.
Second, the advantage of service life: from the perspective of the inner wall of aluminum tube, since the refrigerant does not contain water, the inner wall of copper aluminum connecting tube will not be corroded.
Third, the advantages of energy saving: the lower the heat transfer efficiency, the more energy-saving, or the better the heat insulation effect, the more energy-saving.
Fourth, it has excellent bending performance and is easy to install and move the machine.
